Event Sourcing Nestjs

Overview

The Event Sourcing for NestJS library is a powerful tool for developers looking to implement event sourcing in their NestJS applications using a CQRS (Command Query Responsibility Segregation) architecture. This library simplifies the management and persistence of events, making it easier for developers to build robust, maintainable applications that separate concerns efficiently. With its user-friendly features and seamless integration with MongoDB, this library is a valuable addition for any NestJS developer looking to leverage event sourcing.

Features

• StoreEventBus: This class replaces Nest's EventBus, allowing for event persistence in MongoDB, ensuring no events are lost during processing.
• StoreEventPublisher: An alternative to Nest's EventPublisher, this component dispatches events from your AggregateRoot while storing them for future reference.
• ViewUpdaterHandler: Automatically delegates events to view updaters, enabling you to keep your read database up to date with the latest event-driven changes.
• Replay: Easily re-run stored events, triggering view updater handlers to reconstruct your read database as needed, enhancing flexibility in handling historical data.
• EventStore: Provides access to the history of events related to a specific aggregate, allowing for detailed auditing and debugging capabilities.
• Materialized View Pattern: Implements this state-of-the-art pattern, facilitating the reconstruction of the read database after events are emitted.
• User-Friendly Installation: Simple setup instructions make it easy to integrate this library into your existing NestJS modules.

This library truly enhances event-driven development by providing a comprehensive set of tools to manage event sourcing effectively.